The Theory of Relativity was developed by Einstein and it was influenced by the society suggesting that matter causes space to cave and is very important to our society today.

An experiment had confirmed that light rays from distant stars were deflected by the gravity of the sun in just the amount he had predicted in his theory of gravity, general relativity (Einstein's Big Idea). Einstein's Special Theory of Relativity describes the motion of particles moving at close to the speed of light (Special Relativity). That's why relativity doesn't play a large role in everyday life. Einstein's theory supersedes Newton's, but Newton's theory provides a very good approximation for objects moving at everyday speeds.(Special Relativity).

The Theory of Relativity describes particals moving close to the speed of light. The theory gives the correct law of motion for each particle moving at the speed of light. The speed of light is the same for all observers, no matter what their relative speeds.

The idea of reasoning supported by the Theory of Relativity describing particals moving close to the speed of light can be based on the evidence of Albert Einstein and Issac Newton. Einstein showed how definitions of momentum and energy must be refined and how quantities such as length and time must change from one observer to another in order to get consistent results for physical quantities such as particle half-life.(Special Relativity). The speed of light will be seen to be the same relative to any observer, independent of the motion of the observer, is the crucial idea that led Einstein to formulate his theory.

The idea that we can formulate rules of nature which do not depend on our particular observing situation. (Special Relativity). That the effect of a force on an object is the same independent of what causes the force and also of where the object is or what its speed is. Einstein developed a theory of motion that could consistently contain both the same speed of light for any observer and the familiar addition of velocities described above for slow-moving objects.

The measurable effects of relativity are based on gamma. Gamma depends only on the speed of a particle and is always larger than one. Which essentially deals with the question of whether rest and motion are relative or absolute, and with the consequences of Einstein’s conjecture that they are relative. Einstein's earlier theory of time and space proposed that distance and time aren't absolute.